Methods: A randomized (1:1) double-blind, placebo-controlled trial will evaluate the effects of administering 20 mg of simvastatin daily and 500 mg of resveratrol daily, or administering 20 mg simvastatin and the placebo to women with PCOS at an academic hospital. PCOS is defined according to the Rotterdam criteria. Evaluations are performed at baseline and repeated after 3 and 6 months of treatment. The main outcome is a change of the serum total testosterone and the fasting insulin level.